[Blink>Media] Allow autoplay muted on Android by default

third_party/WebKit/Source/core/html/HTMLMediaElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 3854 matching lines @@
   }
 
   return true;
 }
 
 bool HTMLMediaElement::isAutoplayAllowedPerSettings() const {
   LocalFrame* frame = document().frame();
   if (!frame)
     return false;
   FrameLoaderClient* frameLoaderClient = frame->loader().client();
-  return frameLoaderClient && frameLoaderClient->allowAutoplay(false);
+  return frameLoaderClient && frameLoaderClient->allowAutoplay(true);
 }
 
 void HTMLMediaElement::setNetworkState(NetworkState state) {
   if (m_networkState == state)
     return;
 
   m_networkState = state;
   if (mediaControls())
     mediaControls()->networkStateChanged();
 }
@@ skipping 242 matching lines @@
       kMostlyFillViewportBecomeStableSeconds, BLINK_FROM_HERE);
 }
 
 void HTMLMediaElement::viewportFillDebouncerTimerFired(TimerBase*) {
   m_mostlyFillingViewport = true;
   if (m_webMediaPlayer)
     m_webMediaPlayer->becameDominantVisibleContent(m_mostlyFillingViewport);
 }
 
 }  // namespace blink